Readonly<>类型的继承

interface Person {
  readonly name: string;
  age: number;
}

let person: Person = { name: "John", age: 25 };
person.name = "Mike"; // Error: Cannot assign to 'name' because it is a read-only property.
person.age = 26; // Valid: age is not a read-only property.

type ReadonlyPerson = Readonly<Person>;

let readonlyPerson: ReadonlyPerson = { name: "John", age: 25 };
readonlyPerson.name = "Mike"; // Error: Cannot assign to 'name' because it is a read-only property.
readonlyPerson.age = 26; // Error: Cannot assign to 'age' because it is a read-only property.